SOLUTION: An experienced carpenter requires 15 hours to complete a job. An apprentice requires twice as many hours to complete the same job. How long would it take the carpenters, working
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Question 622827: An experienced carpenter requires 15 hours to complete a job. An apprentice requires twice as many hours to complete the same job. How long would it take the carpenters, working together to complete the job? Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! An experienced carpenter requires 15 hours to complete a job. An apprentice requires twice as many hours to complete the same job. How long would it take the carpenters, working together to complete the job?
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c does 1/15 of the job per hour
a does 1/30
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Together, they do 1/15 + 1/30 = 1/10 per hour
--> 10 hours
